1、BRITISH STANDARD BS EN 10308:2002 Non-destructive testing Ultrasonic testing of steel bars The European Standard EN 10308:2001 has the status of a British Standard ICS 77.040.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 10308:2002 This British Standard, having been
2、prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 29 January 2002 BSI 29 January 2002 ISBN 0 580 38966 9 National foreword This British Standard is the official English language ve
3、rsion of EN 10308:2001. The UK participation in its preparation was entrusted to Technical Committee ISE/72, Methods of physical and metallographic testing, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-refer
4、ences The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catal
5、ogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the tex
6、t; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside
7、front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10308 No
8、vember 2001 ICS 77.040.20; 77.140.60 English version Non-destructive testing Ultrasonic testing of steel bars Essais non-destructifs Contrle par ultrasons des barres en acier Zerstrungsfreie Prfung Ultraschallprfung von Stben aus Stahl This European Standard was approved by CEN on 30 September 2001.
9、 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on
10、application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has
11、the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTE
12、E FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10308:2001 EEN 10308:2001 (E) 2 Content
13、s Page Foreword.3 1 Scope .4 2 Normative references .4 3 Terms and definitions.4 4 Items for agreements5 5 Principle .5 6 Procedure 6 7 Personnel qualification 6 8 Ultrasonic test equipment7 8.1 Instrument .7 8.2 Probe.7 8.3 Calibration blocks7 8.4 Reference blocks 7 8.5 Couplant7 9 Routine calibrat
14、ion and checking .8 10 Stage of manufacture .8 11 Surface condition8 12 Sensitivity setting .8 13 Scanning 8 13.1 General .8 13.2 Grid scanning coverage 8 13.3 Complete scanning coverage .8 13.4 Scanning speed 9 14 Classification.9 14.1 Classification of indications.9 14.2 Classification of disconti
15、nuities .11 15 Recording level and acceptance criteria 13 16 Sizing14 17 Test report .14 Annex A (informative) List of equivalent terms in several European languages.15 Bibliography .16EN 10308:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee ECISS/TC 2, Steel Phys
16、ico-chemical and non-destructive testing, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn
17、 at the latest by May 2002. Annex A is informative. This standard includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finl
18、and, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 10308:2001 (E) 4 1 Scope This European Standard describes the techniques to be used for the manual, pulse-echo, ultrasonic testing of steel bars of d
19、iameter or equivalent thickness less or equal to 400 mm or equivalent section. Mechanized, semi-automatic or automatic techniques may be used but should be agreed between the purchaser and the supplier. 2 Normative references This European Standard incorporates by dated or undated reference, provisi
20、ons from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by
21、 amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 473, Non-destructive testing Qualification and certification of NDT personnel General principles. EN 583-2, Non-destructive testing Ultrasonic examination Part 2: Sensi
22、tivity and range setting. EN 583-5, Non-destructive testing Ultrasonic examination Part 5: Characterization and sizing of discontinuities. EN 1330-4, Non-destructive testing Terminology Part 4: Terms used in ultrasonic testing. EN 12223, Non-destructive testing Ultrasonic examination Specification f
23、or calibration block no. 1. EN 12668-1, Non-destructive testing Characterization and verification of ultrasonic examination equipment Part 1: Instruments. EN 12668-2, Non-destructive testing Characterization and verification of ultrasonic examination equipment Part 2: Probes. EN 12668-3, Non-destruc
24、tive testing Characterization and verification of ultrasonic examination equipment Part 3: Combined equipment. 3 Terms and definitions Definitions for general terms of non-destructive testing can be found in other European Standards, e.g. EN 1330-1 and EN 1330-2. For the purposes of this European St
25、andard, the following terms and definitions given in EN 1330-4 apply, together with the following. 3.1 manual testing testing by an operator applying an ultrasonic probe, or probes, to the product surface, manually executing the appropriate scanning pattern on the product surface and assessing ultra
26、sonic signal indications on the electronic equipment screen either by direct viewing or by built-in signal amplitude alarm devices 3.2 automatic and semi-automatic testing testing using a mechanized means of applying the ultrasonic probe or probes to, and executing the appropriate scanning pattern o
27、n the flat product surface, together with ultrasonic signal indication evaluation by electronic means NOTE Such testing can be either fully automatic with no operator involvement, or semi-automatic when the operator performs basic equipment operation functions. A list of equivalent terms in several
28、European languages in given in Annex A.EN 10308:2001 (E) 5 4 Items for agreements The following aspects concerning ultrasonic testing shall be agreed between the purchaser and supplier at the time of the enquiry or order: a) the manufacturing stage(s) at which ultrasonic testing shall be performed (
29、see clause 10); b) the volume(s) to be tested and whether grid scanning coverage or complete scanning coverage is required (see clause 13); c) the Quality Class required, or the Quality Classes and the zones to which they apply (see clause 15); d) the applicable evaluation level and acceptance crite
30、ria if different from those detailed in Tables 2 and 3; e) whether any special scanning coverage, equipment or couplant is required in addition to that detailed in clauses 8 and 13; f) the scanning technique to be used if not manual; g) the sizing techniques to be used for extended discontinuities (
31、see clause 16); h) the technique(s) to be used for setting sensitivity (see clause 12); i) whether the test is to be conducted in the presence of the purchaser or his representative; j) whether a written procedure shall be submitted for approval by the purchaser (see clause 6). 5 Principle The metho
32、d used is based on the reflection of ultrasonic waves (generally longitudinal), the direction of which is approximately perpendicular to the surface of the product. The examination consists of: a) locating and evaluation of discontinuity by comparing the amplitude of the discontinuity echo with the
33、amplitude of the echo of a flat-bottomed hole of a given diameter and located at the same depth as the discontinuity. NOTE Only those discontinuities giving an echo in amplitude equal to or greater than that obtained with the reference flat-bottomed hole are taken into consideration. b) determining
34、the area of the discontinuity according to the 6 dB beam width technique. If areas with particular permeability are located, the testing conditions shall be adjusted in order to test these areas with the required sensitivity level. The examination is carried out during the first ultrasonic scan (fir
35、st back wall echo) for all the product thicknesses or diameter and from one side only.EN 10308:2001 (E) 6 6 Procedure The inspection is normally carried out in the place of production or on the premises of the supplier. If specified on the order, the inspection may take place in the presence of the
36、purchaser or his representative 1) . Ultrasonic testing shall be performed in accordance with a written procedure. Where specified in the enquiry or order, the written procedure shall be submitted to the purchaser for approval prior to testing. This written procedure shall be in the form of: a) a pr
37、oduct specification or; b) a procedure written specifically for the application or; c) this European Standard may be used if it is accompanied by examination details specific to the application. The procedure shall contain the following details as a minimum requirement: a) description of the item to
38、 be examined; b) reference documents; c) qualification and certification of examination personnel; d) stage of manufacture at which the examination is carried out; e) examination zones specified in terms of the applicable Quality Classes; f) any special preparation of scanning surfaces, if applicabl
39、e; g) couplant; h) description of examination equipment; i) calibration; j) scanning plan; k) description and sequence of examination operations; l) recording level; m) characterization of discontinuities; n) acceptance criteria; o) examination report. 7 Personnel qualification It is assumed that ul
40、trasonic testing is performed by qualified and capable personnel. In order to prove this qualification, it is recommended to certify the personnel in accordance with EN 473 or equivalent.1) In this case, all steps should be taken to ensure that the production process is not disturbed.EN 10308:2001 (
41、E) 7 8 Ultrasonic test equipment 8.1 Instrument Instrument for manual testing shall feature A-scan presentation and shall comply with the requirements of EN 12668-1. 8.2 Probe 8.2.1 General Single transducer probes and double transducer probes shall conform to the requirements of EN 12668-2. Additio
42、nally, other types of probes may be used. Such supplementary probes need not to comply with EN 12668-2 requirements. 8.2.2 Contouring Probes shall be contoured when required according to EN 583-2. 8.2.3 Nominal frequency Probes shall have a nominal frequency in the range from 1 MHz to 6 MHz. 8.2.4 T
43、ype of Probes The greatest transducer dimension shall be in the range from 9 mm to 25 mm, unless otherwise agreed. Double transducer probes can be used for bars with sizes up to 150 mm diameters or thickness. Single transducer probes shall be used for bars with diameter or thickness greater than 60
44、mm. 8.3 Calibration blocks Calibration blocks shall conform to the requirements detailed in EN 12223. 8.4 Reference blocks References blocks shall be made from a material having similar acoustic properties to the product to be examined. The surface condition of the reference block shall be represent
45、ative of the surface condition of the bars to be examined. Unless otherwise specified the reference block shall contain at least three reflectors covering the entire depth range under examination. The form of the reference block will depend upon the application. The bottom of the holes shall be as f
46、lat as practicable, parallel to the ultrasound entry surface and free from pits or score marks that significantly degrade its ultrasonic reflectivity. The tolerance on the diameter of the flat-bottomed hole or width of recess shall be 5 %. 8.5 Couplant The couplant used shall be appropriate to the a
47、pplication. The same type of couplant shall be used for calibration, setting sensitivity, scanning and evaluation of discontinuities. After examination, couplant shall be removed if its presence could adversely affect later manufacturing or inspection operations or the integrity of the component. NO
48、TE Water is normally used but other coupling media may be used at the discretion of the supplier.EN 10308:2001 (E) 8 9 Routine calibration and checking The combined equipment (instrument and probes) shall be calibrated and checked in accordance with the requirements detailed in EN 12668-3. 10 Stage
49、of manufacture Ultrasonic testing shall be performed after the final quality heat treatment unless otherwise agreed at the time of enquiry and order. 11 Surface condition Scanning surfaces shall be free from paint, non-adhering scale, dry couplant, surface irregularities or any other substance which could reduce coupling efficiency, hinder the free movement of the probe or cause errors in interpretation. The surface condition shall be considered acceptable providing the specified quality class can be achieved. 12 Sensitivity sett
